Oakforest-PACS system has been registsered as the first IO-500 winner.
22 Nov. 2017
Oakforest-PACS supercomputer operated by JCAHPC (The Joint Center for Advanced High Performance Computing) has ranked #1 in the first IO-500 list released in November 2017. The IO-500 is a world ranking list of storage performance, which is evaluated by the IO-500 benchmark that measures the storage performance using read/write bandwidth for large files and read/write/listing performance for small files. Storage performance in supercomputers is critical for large-scale simulation, big data analysis, and artificial intelligence. The IO-500 list facilitates to improve the storage performance that greatly helps to improve the CPU performance. A storage system of the Oakforest-PACS supercomputer comprises a parallel file system (DataDirect Networks ES14KX) and a file cache system (Infinite Memory Engine ). The file cache system is introduced to improve the storage performance. The IO-500 benchmark for the file cache system achieves 742 GiB/s for file per process write access that parallel processes access their own file, and 600 GiB/s for single shared file write access that parallel processes access a single shared file but a different position, which is typical access patterns in high performance computing.
JCAHPC announcement : release_171122
Award presentation and IO-500 award plaque